Monthly outlook for Herron, MT: average high 53.2°, average low 39.8°. That is 1.7° below the climate normal for October. Precipitation is expected on 4 days (about 0.8 inches), against a normal of 2 days and 0.4 inches. The warmest day looks like 9 October (83.7°), the coolest 13 October (28°).
53.2°/39.8°
Average high / low
−1.7°
Below normal
4 / 2
Wet days / normal
0.8 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
9 October – 18 October
52°
56.7°
-2.6°
19 October – 28 October
55.1°
53.7°
+0.8°
29 October – 7 November
at normal
46.9°
—
October records over 66 years
86.4°7 October 1980All-time high
-16.1°29 October 1991All-time low
Climate normals and records are computed from the nearest reference point — Kremlin (15 mi).
Sat, 1053° / 41°0.08
53 °
Herron, Saturday, 10 October
Light rain. High 53°, low 41°.
Pressure29.80 inHg
Wind10.3 mph NW
Humidity62%
Visibility5.1 mi
Dew point33°
Sun, 1140° / 34°0.29
40 °
Herron, Sunday, 11 October
Snow. High 40°, low 34°.
Pressure30.18 inHg
Wind11.9 mph NE
Humidity92%
Visibility2.0 mi
Dew point34°
Mon, 1236° / 33°0.35
36 °
Herron, Monday, 12 October
Snow. High 36°, low 33°.
Pressure30.18 inHg
Wind4.5 mph NE
Humidity98%
Visibility2.7 mi
Dew point33°
Tue, 1343° / 28°0
43 °
Herron, Tuesday, 13 October
Overcast. High 43°, low 28°.
Pressure30.12 inHg
Wind5.5 mph SW
Humidity84%
Visibility—
Dew point31°
Wed, 1448° / 33°0.02
48 °
Herron, Wednesday, 14 October
Light rain. High 48°, low 33°.
Pressure29.88 inHg
Wind20.4 mph NW
Humidity56%
Visibility—
Dew point31°
Thu, 1544° / 36°0.01
44 °
Herron, Thursday, 15 October
Light rain. High 44°, low 36°.
Pressure30.42 inHg
Wind25.7 mph NW
Humidity43%
Visibility—
Dew point22°
Fri, 1655° / 31°0
55 °
Herron, Friday, 16 October
Clear. High 55°, low 31°.
Pressure30.42 inHg
Wind7.9 mph W
Humidity26%
Visibility—
Dew point12°
Sat, 1760° / 48°0
60 °
Herron, Saturday, 17 October
Mostly clear. High 60°, low 48°.
Pressure30.09 inHg
Wind17.2 mph SW
Humidity28%
Visibility—
Dew point23°
Sun, 1857° / 45°0
57 °
Herron, Sunday, 18 October
Overcast. High 57°, low 45°.
Pressure30.06 inHg
Wind8.6 mph SW
Humidity37%
Visibility—
Dew point27°
Mon, 1963° / 43°0
63 °
Herron, Monday, 19 October
Overcast. High 63°, low 43°.
Pressure29.91 inHg
Wind6.8 mph W
Humidity39%
Visibility—
Dew point28°
Tue, 2052° / 44°0.08
52 °
Herron, Tuesday, 20 October
Light rain. High 52°, low 44°.
Pressure30.03 inHg
Wind9.1 mph NW
Humidity69%
Visibility—
Dew point37°
Wed, 2152° / 41°0
52 °
Herron, Wednesday, 21 October
Overcast. High 52°, low 41°.
Pressure30.30 inHg
Wind6.2 mph E
Humidity57%
Visibility—
Dew point33°
Thu, 2256° / 40°0
56 °
Herron, Thursday, 22 October
Mostly clear. High 56°, low 40°.
Pressure30.21 inHg
Wind14.6 mph SE
Humidity57%
Visibility—
Dew point37°
Fri, 2351° / 44°0
51 °
Herron, Friday, 23 October
Overcast. High 51°, low 44°.
Pressure30.03 inHg
Wind9.4 mph E
Humidity72%
Visibility—
Dew point38°
Sat, 2456° / 44°0
56 °
Herron, Saturday, 24 October
Overcast. High 56°, low 44°.
Pressure29.97 inHg
Wind9.6 mph NW
Humidity64%
Visibility—
Dew point40°
From day 17 onward the outlook is built from 60-year climate statistics
Sun, 2553° / 35°0.01
53 °
Herron, Sunday, 25 October
Climate normal for this date — 60-year average.
Average high53°
Average low35°
Average precipitation0.01 in
Chance of precipitation7%
Record high76° (1990)
Record low7° (2020)
Mon, 2651° / 35°0.04
51 °
Herron, Monday, 26 October
Climate normal for this date — 60-year average.
Average high51°
Average low35°
Average precipitation0.04 in
Chance of precipitation18%
Record high72° (1960)
Record low9° (2020)
Tue, 2751° / 33°0.04
51 °
Herron, Tuesday, 27 October
Climate normal for this date — 60-year average.
Average high51°
Average low33°
Average precipitation0.04 in
Chance of precipitation17%
Record high69° (2024)
Record low10° (2023)
Wed, 2850° / 31°0.02
50 °
Herron, Wednesday, 28 October
Climate normal for this date — 60-year average.
Average high50°
Average low31°
Average precipitation0.02 in
Chance of precipitation17%
Record high71° (1973)
Record low-6° (1991)
Thu, 2949° / 31°0.03
49 °
Herron, Thursday, 29 October
Climate normal for this date — 60-year average.
Average high49°
Average low31°
Average precipitation0.03 in
Chance of precipitation17%
Record high72° (2008)
Record low-16° (1991)
Fri, 3049° / 30°0.02
49 °
Herron, Friday, 30 October
Climate normal for this date — 60-year average.
Average high49°
Average low30°
Average precipitation0.02 in
Chance of precipitation10%
Record high68° (1983)
Record low-15° (1991)
Sat, 3147° / 30°0.04
47 °
Herron, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high47°
Average low30°
Average precipitation0.04 in
Chance of precipitation18%
Record high66° (2008)
Record low-11° (1984)
Sun, 0147° / 30°0.01
47 °
Herron, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high47°
Average low30°
Average precipitation0.01 in
Chance of precipitation12%
Record high68° (1965)
Record low-18° (1984)
Mon, 0247° / 30°0.02
47 °
Herron, Monday, 2 November
Climate normal for this date — 60-year average.
Average high47°
Average low30°
Average precipitation0.02 in
Chance of precipitation20%
Record high65° (1978)
Record low-18° (1991)
Tue, 0348° / 30°0.02
48 °
Herron, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high48°
Average low30°
Average precipitation0.02 in
Chance of precipitation15%
Record high66° (1983)
Record low-9° (1991)
Wed, 0448° / 32°0.03
48 °
Herron, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high48°
Average low32°
Average precipitation0.03 in
Chance of precipitation15%
Record high69° (1975)
Record low5° (2003)
Thu, 0546° / 30°0.04
46 °
Herron, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high46°
Average low30°
Average precipitation0.04 in
Chance of precipitation20%
Record high68° (1975)
Record low-10° (2003)
Fri, 0645° / 28°0.02
45 °
Herron, Friday, 6 November
Climate normal for this date — 60-year average.
Average high45°
Average low28°
Average precipitation0.02 in
Chance of precipitation17%
Record high67° (2010)
Record low3° (2003)
Sat, 0744° / 29°0.02
44 °
Herron, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high44°
Average low29°
Average precipitation0.02 in
Chance of precipitation18%
Record high71° (2010)
Record low-5° (1973)
About the monthly outlook
How accurate is a 30-day forecast?
The first 16 days come from weather models — reliable for the first 3–5 days and progressively less so after that. Days 17 through 30 for Herron, MT are built from the climate normal, the 60-year average, so they show typical weather for those dates rather than a specific forecast.
What does "above normal" mean?
We compare the forecast against the climate normal for those exact calendar days, computed from 60 years of observations. The deviation shows how much the coming month differs from a typical one.
Where do the 66-year records come from?
They are real temperature extremes recorded in Herron, MT since 1960: the highest and lowest reading for each calendar date, with the year it happened.
How often is it updated?
The forecast portion refreshes every hour; the climate portion is based on long-term data and stays stable.